20013112223112 has 128 divisors (see below), whose sum is σ = 50420072736000. Its totient is φ = 6619625717760.

The previous prime is 20013112223099. The next prime is 20013112223147. The reversal of 20013112223112 is 21132221131002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3652691589 + ... + 3652697067.

It is an arithmetic number, because the mean of its divisors is an integer number (393906818250).

Almost surely, 2^{20013112223112} is an apocalyptic number.

It is an amenable number.

20013112223112 is an abundant number, since it is smaller than the sum of its proper divisors (30406960512888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20013112223112 is a wasteful number, since it uses less digits than its factorization.

20013112223112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7871 (or 7867 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 20013112223112 its reverse (21132221131002), we get a palindrome (41145333354114).

The spelling of 20013112223112 in words is "twenty trillion, thirteen billion, one hundred twelve million, two hundred twenty-three thousand, one hundred twelve".